Hardware Description
ARM DUI 0224F Copyright © 2003-2007 ARM Limited. All rights reserved. 3-21
If autoconfiguration fails, load the configuration file (
.cfg
) for the board. For
details on manual configuration, see the
readme.txt
file on the CD.
4. Run the
Progcards
utility from:
install_directory\Versatile\PB926EJS\build\Release\boardfiles\
5. Choose the required image for the configuration PLD.
Caution
The 1.5V cell battery provides the VBATT backup voltage to the external DS1338
time-of-year clock and FPGA encryption key circuitry within the FPGA. Removing the
battery erases the encryption key.
Each board is provided with an encryption key that is unique to the board. The standard
image supplied with the board is not encrypted. However, encrypted images might be
supplied by ARM in the future. If you are using encrypted images and the key is erased,
you must return the board to ARM to have the key reloaded.
The battery is expected to last for approximately 10 years from manufacture of the
PB926EJ-S. To replace the battery:
1. Power on the PB926EJ-S. If the battery is removed while the board is powered
down, the encryption key will be erased.
2. Remove the old battery.
3. Insert the new battery and ensure that the positive terminal is facing upwards in
the holder.